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Jaipur, India: The Global Gem and Jewellery Power of the Pink City

Examines Jaipur’s role as a coloured stone cutting and jewellery manufacturing centre, with profiles of 17 companies and their factory, trading and retail operations.

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Article
GIA's Gübelin Gem Project: Various Gems, Taaffeite - Zoisite

Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.

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Tanzanite
Article
Tanzanite Description

Tanzanite is the blue to violet to purple variety of the mineral zoisite. It is mined commercially only in one area of the world: the Merelani Hills of Tanzania, which is where it gets its name.

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Article
Tanzanite Journey

Lush blue velvet. Rich royal purple. Exotic tanzanite is found in only one place on earth, near majestic Kilimanjaro

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Tanzanite
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Tanzanite Quality Factors

Learn about the factors that make tanzanite so desirable.

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Tanzanite
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Tanzanite History and Lore

Tanzanite is relatively new to the coloured stone galaxy. Almost overnight, tanzanite became popular with leading jewellery designers and other gem professionals, as well as with customers who had an eye for beautiful and unusual gems.

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Merelaniite whisker inclusions in tanzanite.
Merelaniite Inclusions in Tanzanite

A recently identified mineral is found, in whisker-like form, in a gem-quality tanzanite host.

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Wedding couple: Groom in black tuxedo and woman in white gown hold hands and gaze at one another. California hills in the background.
Article
Love in Tucson: The ‘Stars Aligned’ for Geologist and Designer at GIA Alumni Party

They met in the queue to get into the GIA Alumni Association Tucson party – and changed the course of their lives forever.

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Article
2017 Las Vegas Trade Patchy, Designers and Diamonds Lead

Designers respond to market trends; demand for diamonds better than expected. Plus: Holiday season diamond marketing campaign gets funding boost.

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An iridescent cleavage in tanzanite
Iridescent Inclusion in Tanzanite

A tanzanite displayed crystallographically aligned, vividly iridescent colours resulting from fine separations along the stone’s cleavage planes.

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